PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

304-02Seat,valve

Textron Aviation Inc · NSN 4820-01-666-2910 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-666-2910 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-666-2910. Primary manufacturer part number: 304-02.
Features
  • Seat,valve — FSC 4820
  • 2 verified cross-references
  • Primary manufacturer: Textron Aviation Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-666-2910, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Textron Aviation Inc. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-666-2910
Primary Part Number304-02
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerTextron Aviation Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
2825-00-390-4165 INTERCHANGEABLE
Cylinder,relay
3110-01-196-582730402 INTERCHANGEABLE
Bearing,ball,annular
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
4720-01-284-324330402 INTERCHANGEABLE
Hose Assembly,nonmetallic
Little Beaver Inc
6530-01-382-6431 INTERCHANGEABLE
Chair,bathtub and Shower
3130-01-461-666330-402 INTERCHANGEABLE
Bearing Unit,roller
Parker-Hannifin Corporation Dba Pneutronics Div Pneumatic Division
Cross-Reference Index
Part NumberManufacturer
304-02 Beechcraft Corporation Dba Textron Aviation (USA)
304-02 PRIMARY Textron Aviation Inc (USA)
Related Parts
2825-00-390-4165INTERCHANGEABLE
CYLINDER,RELAY
3110-01-196-5827INTERCHANGEABLE
BEARING,BALL,ANNULAR
30402
4720-01-284-3243INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
30402
6530-01-382-6431INTERCHANGEABLE
CHAIR,BATHTUB AND SHOWER
3130-01-461-6663INTERCHANGEABLE
BEARING UNIT,ROLLER
30-402

Frequently Asked Questions

What is NSN 4820-01-666-2910?

NSN 4820-01-666-2910 is a Seat,valve, manufactured by Textron Aviation Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-666-2910?

NSN 4820-01-666-2910 has 2 cross-referenced part numbers: 304-02 (Beechcraft Corporation Dba Textron Aviation), 304-02 (Textron Aviation Inc).

What NSN replaces 4820-01-666-2910?

There are 5 known substitutes for 4820-01-666-2910: 2825-00-390-4165, 3110-01-196-5827, 4720-01-284-3243 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 304-02?

Key specifications for 304-02: Special Features: FOR HAWKER 800XP/850XP; Part Name Assigned by Controlling Agency: INDICATOR-INDEXER, ANGLE OF ATTACK. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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